Description Of Operation: Limp-Home
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
The limp-home function is a safety circuit in the lighting system which ensures that dipped beams can be used even when DICE is not functioning.
When the light switch is in position 2, voltage +X can also be used to power the dipped beam lamps. Voltage +X is fed to the dipped beam relay, which is in the closed, and directly through the relay via the filament monitor (228b) and fuses (6 and 7) to the dipped beam lamps. However, the light from the dipped beams will be somewhat weaker than normal because the voltage drop in the circuit is greater.